Process of the manufacture of insulating materials.



UNITED STATES PATENT OFFICE.

HERMANN V. D. HEIDE, OF DATTELN, GERMANY, ASSIGNQR TO THE FIRM OF WUNNERSCHE BITUMENWERKE G. M. B. 11., OF DATTELN, GERMANY.

PROCESS OF Tim MANUFACTURE OF INSULATING MATERIALS.

Specification of Letters Patent.

Patented Nov. 10, 1908.

- Application filed Kay 31, 1907. Serial No. 876,711.

To all whom 'it may concern:

Be it known that I, I'IERMANN VON DER HEIDE, doctor of philosophy, chemist, a subject of the King of Prussia, German Emperor, residin at Datteln, Province of West'- phalia, King om of I russia German Empire, have invented new and useful Improvem'ents in Processes of Manufacture of Insulating Materials, of which the following is a specification.

The present invention refers to the manufacture of insulating materials, which can be used as an insulating cement for building andsimilar purposes in order to prevent the entrance or exit of moisture.

The rocess consists in'emulsifying a mixture o pitch and heavy coal tar 011s with substances of alkaline substances as alkali hydroxids or alkali carbonates and oxidizing the emulsion by means of inorganic oxidiz-- ing oxids.

n the place of pitch and coal'tar oils one can use asphaltum, the residues of the petroleum distillation, resins, fats, parafiin and where reference is hereafter made to pitch and coal tar oils I intend to include also these equivalents. One may also mix the said substances with the mixture of pitch and coal tar oils. The skilled workman will select the substances according to their costs and their consistency.

As inorganic oxidizing oxids the superoxids have been found as very suitable. Especially the superoxids of the alkali metals or earth alkali metals are very suitable, for instance barium superoxid. Other inorganic oxidizing substances suitable for the pn oses of the resent invention are: superoxi of lead, litharge, superoxid of manganese, m nesium, sodium.

The pro not of my process is used for buildin purposes by mixing the insulati materia with building materials as Portlan or hydraulic cement and like substances. It is useful to mix the product with substances which will react with the building materials. If Portland cement is used as building material an admixture of water glass is very suitable.

In order to illustrate the manner, in which my invention may be carried out, I quote the following example: 200,kilograms of pitch (coal tar pitch) and 600 kilograms of heavy coal tar OllS are mixed with 24 kilo ams of calcined carbonate of'sodium, 50 kilograms of Water and 340 kilograms of sodium-or potassiumwater glass, until a uniform emulsion will be formed. Then one adds 23 kilograms of superoxid of barium. One may also add to the product filling substance as sand.

I claim:

1. The rocess for manufacturing an insulating building material which consists in mixing pitch and heavy coal tar oils, emulsifying the said mixture with a solution of alkaline reaction and oxidizing the said emulsion with an inorganic oxid.

2. The process for manufacturing an insulating building material which consists in mixing pitchand heavy coal tar oils, emulsifying the said mixture with a solution of alkaline reaction and with a substance reacting with cement and oxidizing the said emulsion with an inorganic oxid.

3. The rocess for manufacturing an insulating building material which consists in mixing pitch and heavy coal tar oils, emul sifying the said mixture with a solution of alkaline reaction and oxidizing the said emulsion with su eroxid of barium.

4. The rocess or manufacturing an insulating building material which consists in mixing pitch and heavy coal tar oils, emulsifying the said mixture with a solution of alkaline reaction and water glass and oxidizing the said emulsion with superoxid of barium.

5. An insulating building material consisting of an. oxidized emulsion ofpitch and heavy coal tar oils in an alkaline solution.

6. An insulating building material consisting of an oxidized emulsion of pitch and heavy coal tar oils in a solution containing water glass and having an alkaline reaction.

7. An insulatin building material consisting of an emu sion of pitch and heavy coal tar oils in a solution having an alkaline reaction and oxidized by means of superoxid of barium.

8. The process of manufacturing a'n insulating buildingl material which consists in mixing pitch, eavy coal tar oils, emulsifying the same in a solution containing calcined carbonate of soda and water glass and then addin an inorganic oxid to the emulsion to oxi ize the same.

9. The rocess of manufacturing an insulating building material, which consists in emulsifying a mixture composed of 200 parts of pitch and 600 parts'of heavy coal tar oil, with cement, and oxidized by means of an in a solution composed of 50 parts of water inorganic oxid.

2i parts of calcined carbonate of soda and i In witness whereof I have hereunto signed 340 parts of water glass and then oxidizing my name this 11th day of May, 1907, in the 5 the emulsion by adding thereto 23 parts of presence of two subscribing Witnesses.

an inor anic oxid. "r

10. A21 insulating building material (2011- HERMANN HEIDE' sisting of an emulsion of pitch and heavy Witnesses: I

coal tar oils in a solution having an alkaline "ALFRED POHLMEYER,

10 reaction and containing a substance reacting M. ENGELS. 

